Bug 2375640

Summary: Plasmashell, KWin, and KRunner crashed after recent update
Product: [Fedora] Fedora Reporter: Martin Jørgensen <mrtnjrgsn>
Component: plasma-desktopAssignee: KDE SIG <kde-sig>
Status: CLOSED DUPLICATE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: urgent Docs Contact:
Priority: unspecified    
Version: 42CC: hygorhernane, jgrulich, kde-sig, rdieter, than, viniciush.dev
Target Milestone: ---Keywords: Desktop, Regression, Upgrades
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2025-07-01 06:02:45 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Martin Jørgensen 2025-06-30 19:45:07 UTC 
I recently updated my system, got this error message described in this source (https://www.spinics.net/linux/fedora/fedora-users/msg528992.html)

I applied this solution from this source (https://discussion.fedoraproject.org/t/my-update-doesnt-go-through-because-of-a-vlc-conflict/156696/3), but this did not fix anything (as far as I could tell).

I changed from akmods-nvidia to akmods-nvidia-open using the commands below from this source (https://rpmfusion.org/Howto/NVIDIA#Kernel_Open)
sudo dnf install rpmfusion-nonfree-release-tainted
sudo dnf swap akmod-nvidia akmod-nvidia-open

This did nothing as far as I could tell.

The final solution was this simple.

cd ~/.config
tar -c plasma* -f plasma.tar
rm -r plasma*

This got me a stable plasmashell.

I then got the error that software rendering is in use. I clicked the "Defaults" button, which set the renderer from "Software" to "Automatic".

I applied the setting, logged out and back in again. Now everything works.

This is my dnf history list:

➤ sudo dnf history list
 ID Command line                                                                                                                                                Date and time       Action(s) Altered
121 dnf update                                                                                                                                                  2025-06-30 18:34:27               144
120 dnf remove wine-core                                                                                                                                        2025-06-30 18:34:00                43
119 dnf remove lutris                                                                                                                                           2025-06-30 18:32:33                 1
118 dnf install plasma-workspace-x11                                                                                                                            2025-06-30 18:24:41                 2
117 dnf -y reinstall --nogpgcheck --disablerepo=* /tmp/akmods.zOel1I7t/results/kmod-VirtualBox-6.15.4-200.fc42.x86_64-7.1.10-1.fc42.x86_64.rpm                  2025-06-30 18:19:56                 2
116 dnf -y reinstall --nogpgcheck --disablerepo=* /tmp/akmods.MrrUl2iO/results/kmod-nvidia-open-6.15.4-200.fc42.x86_64-575.64-1.fc42.x86_64.rpm                 2025-06-30 18:19:30                 2
115 dnf -y install --nogpgcheck --disablerepo=* /tmp/akmods.RrRqEWeH/results/kmod-nvidia-open-6.15.4-200.fc42.x86_64-575.64-1.fc42.x86_64.rpm                   2025-06-30 18:10:46                 1
114 dnf swap akmod-nvidia akmod-nvidia-open                                                                                                                     2025-06-30 18:03:57                 3
113 dnf install rpmfusion-nonfree-release-tainted                                                                                                               2025-06-30 18:03:27                 1
112 dnf install kwin-x11                                                                                                                                        2025-06-30 17:52:51                 2
111 dnf -y install --nogpgcheck --disablerepo=* /tmp/akmods.64luFoKt/results/kmod-VirtualBox-6.15.4-200.fc42.x86_64-7.1.10-1.fc42.x86_64.rpm                    2025-06-30 17:20:50                 1
110 dnf -y install --nogpgcheck --disablerepo=* /tmp/akmods.Cca0TlvW/results/kmod-nvidia-6.15.4-200.fc42.x86_64-575.64-2.fc42.x86_64.rpm                        2025-06-30 17:20:35                 1
109 dnf upgrade                                                                                                                                                 2025-06-30 17:18:49                56
108 dnf remove vlc-plugins-base vlc-plugins-freeworld                                                                                                           2025-06-30 17:18:12                12
107 dnf remove vlc-devel                                                                                                                                        2025-06-30 17:17:10                 1
106 dnf autoremove                                                                                                                                              2025-06-30 17:14:29               113
105 dnf -y install --nogpgcheck --disablerepo=* /tmp/akmods.VabbjtQC/results/kmod-VirtualBox-6.15.3-200.fc42.x86_64-7.1.10-1.fc42.x86_64.rpm                    2025-06-29 11:28:03                 1
104 dnf -y install --nogpgcheck --disablerepo=* /tmp/akmods.io5v3k42/results/kmod-nvidia-6.15.3-200.fc42.x86_64-575.64-2.fc42.x86_64.rpm                        2025-06-29 11:27:38                 1
103 dnf update -x vlc*                                                                                                                                          2025-06-29 11:21:10               677

Reproducible: Always

Steps to Reproduce:
1. Latest update 2025-06-24
2. Attempt update, get error about conflicting vlc-plugins-{base,freeworld} files??
3. Update using dnf -x "vlc*"
4. Watch as plasma indefinetely crashes
Actual Results:
Plasmashell crashes three times
Crash Handler starts collecting data using gdb (~6GB memory usage per gdb process).
CPU avg 9.9 something
10 more Crash Handlers for plasmashell spawns
59/64GB RAM in use while gdb crash handling

Expected Results:
Logs in and get stable plasmashell
Comment 1 Martin Jørgensen 2025-06-30 19:51:42 UTC 
Forgot to mention that in Settings > Input & Output > Screen Edges I had configured the top left corner of my screen to "Overview".
During the indefinite crash of plasmashell; if I moved my cursor to the top left of the screen, KWin crashed.

During my debugging session, fortunately I had KRunner available, but (I assume) that when I was using KRunner, gdb was running in the background, so that crashed aswell.

Also forgot some details about versions. So fastfetch to the rescue:
➤ fastfetch
             .',;::::;,'.                 martin@fedora
         .';:cccccccccccc:;,.             -------------
      .;cccccccccccccccccccccc;.          OS: Fedora Linux 42 (KDE Plasma Desktop Edition) x86_64
    .:cccccccccccccccccccccccccc:.        Kernel: Linux 6.15.4-200.fc42.x86_64
  .;ccccccccccccc;.:dddl:.;ccccccc;.      Uptime: 25 mins
 .:ccccccccccccc;OWMKOOXMWd;ccccccc:.     Packages: 8337 (rpm), 18 (flatpak)
.:ccccccccccccc;KMMc;cc;xMMc;ccccccc:.    Shell: fish 4.0.2
,cccccccccccccc;MMM.;cc;;WW:;cccccccc,    Display (SAME028): 5120x1440 @ 240 Hz (as 3661x1029) in 49" [External, HDR]
:cccccccccccccc;MMM.;cccccccccccccccc:    DE: KDE Plasma 6.4.1
:ccccccc;oxOOOo;MMM000k.;cccccccccccc:    WM: KWin (Wayland)
cccccc;0MMKxdd:;MMMkddc.;cccccccccccc;    WM Theme: Breeze
ccccc;XMO';cccc;MMM.;cccccccccccccccc'    Theme: Breeze (Dark) [Qt], Breeze [GTK3]
ccccc;MMo;ccccc;MMW.;ccccccccccccccc;     Icons: breeze-dark [Qt], breeze-dark [GTK3/4]
ccccc;0MNc.ccc.xMMd;ccccccccccccccc;      Font: Noto Sans (10pt) [Qt], Noto Sans (10pt) [GTK3/4]
cccccc;dNMWXXXWM0:;cccccccccccccc:,       Cursor: breeze (24px)
cccccccc;.:odl:.;cccccccccccccc:,.        Terminal: kitty 0.42.1
ccccccccccccccccccccccccccccc:'.          Terminal Font: NotoSansMono-Regular (12pt)
:ccccccccccccccccccccccc:;,..             CPU: Intel(R) Core(TM) i9-9900K (16) @ 5.00 GHz
 ':cccccccccccccccc::;,.                  GPU: NVIDIA GeForce RTX 2080 SUPER [Discrete]
                                          Memory: 8.42 GiB / 62.70 GiB (13%)
                                          Swap: 6.81 GiB / 8.00 GiB (85%)
                                          Disk (/): 557.52 GiB / 1.82 TiB (30%) - btrfs
                                          Local IP (eno1): 192.168.50.94/24
                                          Locale: en_US.UTF-8
Comment 2 Jan Grulich 2025-07-01 06:02:45 UTC 

*** This bug has been marked as a duplicate of bug 2375356 ***